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In some cases, both hydrophilic and hydrophobic properties occur in a single molecule. An example of these amphiphilic molecules is the lipids that comprise the cell membrane. Another example is soap, which has a hydrophilic head and a hydrophobic tail, allowing it to dissolve in both water and oil. Hydrophilic and hydrophobic molecules are ...
Model of hydrogen bonds (1) between molecules of water. A single water molecule can participate in a maximum of four hydrogen bonds because it can accept two bonds using the lone pairs on oxygen and donate two hydrogen atoms. Other molecules like hydrogen fluoride, ammonia, and methanol can also form hydrogen bonds.
The hydrophilic end usually contains a negatively charged phosphate group, and the hydrophobic end usually consists of two "tails" that are long fatty acid residues. [ 4 ] In aqueous solutions, phospholipids are driven by hydrophobic interactions , which result in the fatty acid tails aggregating to minimize interactions with the water molecules.
Water is a good polar solvent, dissolving many salts and hydrophilic organic molecules such as sugars and simple alcohols such as ethanol. Water also dissolves many gases, such as oxygen and carbon dioxide —the latter giving the fizz of carbonated beverages, sparkling wines and beers.
Hydrophilic. Add languages. Add links. Article; Talk; English. Read; ... Download as PDF; Printable version; In other projects ... Wikipedia® is a registered ...
I removed the following erroneous sentence: A hydrophilic molecule is made up of alcohol and fatty acyl chains. This statement is incorrect on two counts. First, it gives the impression that this is the definition of hydrophilicity, when at best alcohols and fatty acids (carboxylic acids more generally) are examples of hydrophilic molecules.
The PEG coating consists of hydrophilic molecules that are repulsive to protein adsorption. [11] Proteins consist of hydrophobic molecules and charge sites that want to bind to other hydrophobic molecules and oppositely charged sites. [12] By applying a thin monolayer coating of PEG, protein adsorption is prevented at the device site.
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